A mechanism for secure tendering in an open electronic network
CA 2237441 C · Owner: Kou, Weidong · Inventors: Kou, Weidong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mechanism for securing bid proposals until close of tendering is provided for an electronic, tendering system over an open network. In order to be permitted to file a bid electronically in, response to an invitation to tender prospective vendors encrypt their bid proposals using session keys, obtained from a third party source. The encrypted proposals are filed with the bid requester who, does not have access to the session keys while the tendering period remains open. The encrypted bid, proposals are cached in a safe repository until close of tendering. In one embodiment, the bid, requester itself holds onto the encrypted proposals and obtains the session , keys for accessing their …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 12, 1998 and granted February 6, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 12, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.